Warming up your body before exercising is a great way to prevent injury. Not only does it prepare your body for the exercise, but it also increases your core body temperature, joint mobility and heart rate. Your warm-up moves will also prepare your mind for the work ahead.
This video will show you three warm-ups: one for cardiovascular training (heart), one for muscular endurance training (strengthening of the major muscles) and one for flexibility (stretching and joint mobility).